Math, asked by mahendrathakur762, 10 months ago

find m if (m-12)x²+2(m-12)x+2= 0 has real and equal roots​

Answers

Answered by maahimishra9696
5

Step-by-step explanation:

hope it will help you.....

Attachments:
Answered by anshuace
5

Step-by-step explanation:

d=0 (real and equal roots)

d= b^2-4ac

0 ={2(m-12)}^2-4(m-12)(2)

=4(m^2-24m+144)-4(2m-24)

= 4{m^2-24m+144-2m+24)

=m^2-26m+168

=m^2-12m-14m+168

=m(m-12) -14(m-12)

=(m-12)(m-14)

=m=>12 &14

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